MESON Chess Problem Database

Problem Display
PID: 227781 (8/8/8/8/8/5n2/2R1RK2/3k4 w - - 0 1)

Schonberger, Tibor

Magyar Sakkvilag, 1926

8/8/8/8/8/5n2/2R1RK2/3k4

#2

3 + 2

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Se1
      • 2.Red2#
    • 1...Sg1
      • 2.Red2#
    • 1...Sd2
      • 2.Rexd2#
    • 1...Sh2
      • 2.Red2#
    • 1...Sd4
      • 2.Red2#
    • 1...Sh4
      • 2.Red2#
    • 1...Se5
      • 2.Red2#
    • 1...Sg5
      • 2.Red2#
  • Tries
    • 1.Kf1?
      • 1...Sd2+
        • 2.Rexd2#
      • 1...Se1
        • 2.Red2#
      • 1...Sg1
        • 2.Red2#
      • 1...Sd4
        • 2.Red2#
      • 1...Sh4
        • 2.Red2#
      • 1...Se5
        • 2.Red2#
      • 1...Sg5
        • 2.Red2#
      • 1...Sh2+!
    • 1.Rb2?
      • threat
        • 2.Rb1#
      • 1...Sd2
        • 2.Re1#
      • 1...Kc1!
  • Keys
    • 1.Ra2!
      • threat
        • 2.Ra1#
      • 1...Kc1
        • 2.Ra1#
      • 1...Sd2
        • 2.Re1#

This is a version of 205571

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 7
  • Sets
    • S(b);N_GUARD::R1(B)
    • S(b);N_GUARD::R1(B),XS(b)
  • Tries
    • Try
      • K(C);P-FLIGHT
      • Vars
        • S(b);CHECK,N_GUARD::R1(B),XS(b)
        • S(b);N_GUARD::R1(B)
      • Refutation
        • S(b);CHECK
    • Try
      • R(A);
      • Threat
        • R(A)
      • Vars
        • S(b);N_GUARD::R1(B)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • R(A);
    • Threat
      • R(A)
    • Vars
      • K(a);P-FLIGHT::R(A)
      • S(b);N_GUARD::R1(B)
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